JPH0298514U - - Google Patents
Info
- Publication number
- JPH0298514U JPH0298514U JP585989U JP585989U JPH0298514U JP H0298514 U JPH0298514 U JP H0298514U JP 585989 U JP585989 U JP 585989U JP 585989 U JP585989 U JP 585989U JP H0298514 U JPH0298514 U JP H0298514U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- amplification
- amplification factor
- control signal
- amplifies
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の一実施例の電気的構成を示す
ブロツク線図、第２図は帯域増幅回路の周波数特
性を示す説明図、第３図は電圧制御増幅回路内の
減衰器の減衰量と入力レベルとの関係を示す説明
図、第４図は音声信号のスペクトラムのレベルと
電圧制御増幅回路の増幅率との関係を示す説明図
、第５図は従来技術の電気的構成を示すブロツク
線図、第６図は従来技術における入力と出力との
関係を示す説明図である。
１……電圧制御増幅回路、２……帯域増幅回路
、３……コントロール信号生成回路、１１……音
声信号、３１……コントロール信号。
Figure 1 is a block diagram showing the electrical configuration of an embodiment of the present invention, Figure 2 is an explanatory diagram showing the frequency characteristics of the band amplifier circuit, and Figure 3 is the amount of attenuation of the attenuator in the voltage controlled amplifier circuit. FIG. 4 is an explanatory diagram showing the relationship between the spectrum level of the audio signal and the amplification factor of the voltage control amplifier circuit, and FIG. 5 is a block diagram showing the electrical configuration of the conventional technology. The diagram and FIG. 6 are explanatory diagrams showing the relationship between input and output in the prior art. DESCRIPTION OF SYMBOLS 1... Voltage control amplifier circuit, 2... Bandwidth amplifier circuit, 3... Control signal generation circuit, 11... Audio signal, 31... Control signal.
Claims (1)
レベルコントロール回路において、 導かれた音声信号の増幅を行うと共に、コント
ロール信号に対応して増幅率が変化する電圧制御
増幅回路と、 この電圧制御増幅回路の出力の増幅を行うと共
に、増幅を行う信号の周波数が、可聴周波数帯域
の低域および高域の周波数、および可聴周波数帯
域外の周波数であるときには、その増幅率が低下
する帯域増幅回路と、 この帯域増幅回路の出力に基づいて前記コント
ロール信号の生成を行うコントロール信号生成回
路とを備え、 前記電圧制御増幅回路は、前記帯域増幅回路の
出力が増加したとき、その増幅率が低下すること
を特徴とするオートレベルコントロール回路。[Claims for Utility Model Registration] Voltage controlled amplification that amplifies the guided audio signal and changes the amplification factor in response to the control signal in an auto level control circuit provided in a circuit that amplifies the audio signal. The output of this voltage-controlled amplifier circuit is amplified, and when the frequency of the signal to be amplified is in the low and high frequencies of the audible frequency band, or the frequency outside the audible frequency band, the amplification factor is and a control signal generation circuit that generates the control signal based on the output of the band amplification circuit. An auto level control circuit characterized by a reduction in its amplification factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP585989U JPH0298514U (en) | 1989-01-20 | 1989-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP585989U JPH0298514U (en) | 1989-01-20 | 1989-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298514U true JPH0298514U (en) | 1990-08-06 |
Family
ID=31209600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP585989U Pending JPH0298514U (en) | 1989-01-20 | 1989-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266776A (en) * | 1999-03-17 | 2000-09-29 | Murata Mfg Co Ltd | Amplification circuit for piezoelectric type acceleration sensor |
-
1989
- 1989-01-20 JP JP585989U patent/JPH0298514U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266776A (en) * | 1999-03-17 | 2000-09-29 | Murata Mfg Co Ltd | Amplification circuit for piezoelectric type acceleration sensor |